US20140162164A1 - Metal separator for fuel cell, fuel cell stack having the same and gasket assembly with fuel cell stack - Google Patents

Metal separator for fuel cell, fuel cell stack having the same and gasket assembly with fuel cell stack Download PDF

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Publication number
US20140162164A1
US20140162164A1 US14/103,315 US201314103315A US2014162164A1 US 20140162164 A1 US20140162164 A1 US 20140162164A1 US 201314103315 A US201314103315 A US 201314103315A US 2014162164 A1 US2014162164 A1 US 2014162164A1
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United States
Prior art keywords
fuel cell
metal
gasket
membrane
assembly
Prior art date
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Abandoned
Application number
US14/103,315
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English (en)
Inventor
Sang Mun Jin
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Hyundai Motor Co
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Hyundai Motor Co
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Assigned to HYUNDAI MOTOR COMPANY reassignment HYUNDAI MOTOR COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JIN, SANG MUN
Publication of US20140162164A1 publication Critical patent/US20140162164A1/en
Abandoned legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—Details of groupings of fuel cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0204—Non-porous and characterised by the material
    • H01M8/0206—Metals or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0267—Collectors; Separators, e.g. bipolar separators; Interconnectors having heating or cooling means, e.g. heaters or coolant flow channels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0297—Arrangements for joining electrodes, reservoir layers, heat exchange units or bipolar separators to each other
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/10—Fuel cells with solid electrolytes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M2008/1095—Fuel cells with polymeric electrolytes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
    • H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • H01M8/0286—Processes for forming seals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

Definitions

  • the present invention relates to a fuel cell stack, and more particularly, to a metal separator for a fuel cell for improving air-tightness of a fuel cell, and a gasket assembly applied to the metal separator for the fuel cell.
  • a fuel cell is a sort of a power generation system for directly converting chemical energy of fuel to electrical energy.
  • a plurality of fuel cells which are referred to as unit cells, are stacked to form a fuel cell stack, which creates an electricity generation assembly.
  • the fuel cell In operation, the fuel cell generates electrical energy via an electrochemical reaction between fuel and an oxidizer, and includes a membrane-electrode assembly (MEA), and separators disposed so as to be in close contact with both sides of the membrane-electrode assembly with the membrane-electrode assembly interposed therebetween.
  • MEA membrane-electrode assembly
  • the separator which is in close contact with an anode electrode of the membrane-electrode assembly may be defined as an anode plate, and the separator which are in close contact with a cathode electrode of the membrane-electrode assembly may be defined as a cathode plate.
  • the anode plate is provided with a fuel channel for supplying hydrogen as a fuel, to the anode electrode of the membrane-electrode assembly in one surface (hereinafter, referred to as a “reaction surface” for convenience of the description).
  • the anode plate includes a cooling channel for distributing cooling medium in the other surface (hereinafter, referred to as a “cooling surface” for convenience of the description).
  • the cathode plate is provided with an oxidizer channel for supplying air, which is an oxidizer, to the cathode electrode of the membrane-electrode assembly on one surface (hereinafter, referred to as a “reaction surface” for convenience of the description).
  • the cathode plate is provided with a cooling channel for distributing cooling medium on the other surface (hereinafter, referred to as a “cooling surface” for convenience of the description).
  • the aforementioned anode plate and cathode plate may be provided with the fuel channel and the oxidizer channel on the respective reaction surfaces and the coolant channels on the respective cooling surfaces via press forming a metal plate.
  • the cooling channels formed on the cooling surfaces of the anode plate and the cathode plate are united together while the cooling surfaces of the anode plate and the cathode plate are in close contact with each other, so that a cooling passage through which cooling medium may flow between the anode plate and the cathode plate is formed.
  • one set in which the anode plate and the cathode plate are in close contact with each other may be defined as a metal separator for the fuel cell.
  • a gasket may be formed between the reaction surfaces of the membrane-electrode assembly and the metal separator and between the cooling surfaces of the metal separators.
  • This gasket is typically integrally injection molded at edges of both surfaces of the anode plate and the cathode plate.
  • the aforementioned method of injection molding of the gasket may deform the separator due to injection pressure and surface contamination of the separator generated during a crosslinking process, and also has a limitation in a design of a shape of the gasket, so it is difficult to improve air-tightness of the entire fuel cell stack.
  • the present invention has been made in an effort to provide a metal separator for a fuel cell capable of improving air-tightness with a simple configuration, improving productivity, and reducing failure of the separator.
  • an exemplary embodiment of the present invention provides a metal separator for a fuel cell disposed at both sides of a membrane-electrode assembly (MEA), in which the metal separator for the fuel cell is formed by welding first and second metal plates, which are initially separated from each other, to each other, and one or more curved portions, which are symmetrical to each other, are formed around a welded portion of the first and second metal plates.
  • MEA membrane-electrode assembly
  • one surface of the first metal plate may be formed as a reaction surface having a first reaction gas channel, and the other surface may be formed as a cooling surface having a cooling channel.
  • one surface of the second metal plate may be formed as a reaction surface having a second reaction gas channel, and the other surface may be formed as a cooling surface having a cooling channel.
  • a cooling passage formed by unifying the cooling channels while the cooling surfaces of the first and second metal plates are welded to each other may be formed between the first and second metal plates.
  • the curved portion may be formed so as to be curved toward the membrane-electrode assembly at edge portions of the reaction surfaces of the first and second metal plates.
  • a plurality of curved portions may be formed at the edge portions of the reaction surfaces of the first and second metal plates. In the edge portions of the reaction surfaces of the first and second metal plates, regions between the curved portions may be welded to each other as well.
  • a fuel cell stack the makes up an electricity generation assembly by stacking a plurality of fuel cells in which the aforementioned metal separator is in close contact with both sides of a membrane-electrode assembly.
  • the fuel cell stack includes a gasket assembly interposed between the membrane-electrode assembly and an edge portion of the metal separator.
  • the metal separator is formed by welding a first metal plate and a second metal plate to each other.
  • one or more curved portions, which are symmetrical to each other, are formed around a welded portion of the first and second metal plates, and the gasket assembly is installed between the membrane-electrode assembly and the edge portion of the metal separator with the curved portion therebetween.
  • the gasket assembly may include a frame formed of an insulation material, and a gasket integrally injection molded with the frame. Further, a plurality of the curved portions may be included at the edge portions of the first and second metal plates. The gasket may be disposed between the curved portions, and regions between the curved portions in edge portions of reaction surfaces of the first and second metal plates may be welded to each other.
  • a gasket assembly of a fuel cell stack making up an electricity generation assembly by stacking a plurality of fuel cells in which the aforementioned metal separator is in close contact with both sides of a membrane-electrode assembly.
  • the gasket assembly is interposed between the membrane-electrode assembly and an edge portion of the metal separator, and includes a frame formed from an insulation material and gaskets integrally injection molded with both surfaces of the frame, in which at least one side surface of the gasket is in close contact with a curved portion of the metal separator, compressed when the fuel cell stack is coupled, and has a shape corresponding to a shape of the curved portion.
  • the frame may include a first portion disposed in a stack direction of the fuel cells, and a second portion connected with the first portion in a vertical direction.
  • the frame may also have a cross-section shaped like a letter “T” in some embodiments of the present invention.
  • gaskets may be injection molded on upper and lower surfaces of the second portion and may be disposed between the membrane-electrode assembly and the edge portion of the metal separator with the curved portion formed at the edge portions of the first and second metal plates therebetween in the metal separator in which a first metal plate and a second metal plate are welded to each other.
  • the metal separator for the fuel cell by forming the curved portions, which are symmetrical to each other, at the edge portions of the first and second metal plates and welding the regions between the curved portions. In doing so, it is possible to further improve air-tightness of the cooling surface and the reaction surface of the metal separator for the fuel cell by welding the cooling surfaces of the first and second metal plates and forming the curved portions at the edge portions of the reaction surfaces of the first and second metal plates.
  • the exemplary embodiment of the present invention it is possible to maintain air-tightness of the fuel cells by separately forming the gasket assembly by a method of injection molding the gaskets in the frame, and interposing the gasket assembly between the edge portions of the first and second metal plates of the metal separator and the membrane-electrode assembly.
  • the gasket assembly is separately formed, so that it is possible to further improve rigidity and air-tightness of the fuel cells, prevent deformation, surface contamination, and the like of the metal separator present in the related art, reduce failure of the metal separator, and further improve productivity of the entire stack.
  • the frame of the gasket assembly serves as a stopper when the fuel cells are stacked, so that it is possible to achieve external insulation of the metal separator and uniformity of a length of the stack.
  • FIG. 1 is a cross-sectional configuration diagram schematically illustrating a fuel cell stack according to an exemplary embodiment of the present invention.
  • FIG. 2 is a cross-sectional configuration diagram illustrating a metal separator applied to the fuel cell stack according to the exemplary embodiment of the present invention.
  • FIG. 3 is a partially cut perspective view of a gasket assembly applied to the fuel cell stack according to the exemplary embodiment of the present invention.
  • vehicle or “vehicular” or other similar term as used herein is inclusive of motor vehicles in general such as passenger automobiles including sports utility vehicles (SUV), buses, trucks, various commercial vehicles, watercraft including a variety of boats and ships, aircraft, and the like, and includes hybrid fuel cell vehicles, electric fuel cell vehicles, plug-in hybrid electric fuel cell vehicles, hydrogen-powered fuel cell vehicles, and other alternative fuel cell vehicles.
  • a hybrid vehicle is a vehicle that has two or more sources of power, for example both fuel cell-powered and electric-powered vehicles.
  • FIG. 1 is a cross-sectional configuration diagram schematically illustrating a fuel cell stack according to an exemplary embodiment of the present invention.
  • the fuel cell stack 100 according to the exemplary embodiment of the present invention includes an electricity generation assembly 1 for generating electrical energy by electrochemical reaction between fuel and an oxidizer which are reaction sources.
  • the fuel cell stack 100 may be applied to a fuel cell system applied to a fuel cell vehicle.
  • the fuel is hydrogen gas and the oxidizer is air.
  • the fuel cell stack 100 may be formed of the electricity generation assembly 1 in which a plurality of fuel cells 50 (generally referred to as a “unit cell” in the art) is stacked.
  • Each fuel cell 50 may be formed by arranging metal separators 20 for the fuel cell according to the exemplary embodiment of the present invention at both sides of a membrane-electrode assembly MEA 10 .
  • an anode electrode and a cathode electrode are formed at both side surfaces of an electrolyte membrane, respectively.
  • the membrane-electrode assembly 10 is a widely and publicly known technology in the art, so that a more detailed description of a configuration thereof in the present specification will be omitted.
  • the metal separator 20 for the fuel cell includes first and second metal plates 21 and 31 .
  • the first and second metal plates 21 and 31 may form passages, through which hydrogen gas and air flow, respectively, and a passage through which cooling medium (for example, a coolant) flows by a press process.
  • cooling medium for example, a coolant
  • One surface of the first metal plate 21 may be formed as a reaction surface having a first reaction gas channel 23 , through which hydrogen gas flows, and being in close contact with the anode electrode of the membrane-electrode assembly 10 .
  • the other surface of the first metal plate 21 may be formed as a cooling surface having a cooling channel 25 , through which cooling medium flows.
  • one surface of the second metal plate 31 may also be formed as a reaction surface having a second reaction gas channel 33 , through which air flows, and being in close contact with the cathode electrode of the membrane-electrode assembly 10 .
  • the other surface of the second metal plate 31 may be formed as a cooling surface having a cooling channel 35 , through which cooling medium flows.
  • a cooling passage 41 formed by unifying the cooling channels 25 and 35 while the cooling surfaces of the first and second metal plates 21 and 31 come into contact with each other is formed between the first and second metal plates 21 and 31 .
  • the fuel cell stack 100 further includes a gasket assembly 70 for maintaining air-tightness between edge portions of the first and second metal plates 21 and 31 of the fuel cell 50 and the membrane-electrode assembly 10 .
  • the gasket assembly 70 may be interposed between the edge portions of the first and second metal plates 21 and 31 and the membrane-electrode assembly 10 .
  • the configuration of the gasket assembly 70 will be described in more detail below.
  • the fuel cell stack 100 according to the exemplary embodiment of the present invention having the aforementioned configuration has a structure capable of improving air-tightness of the entire stack by improving a coupling structure of the first and second metal plates 21 and 31 for the metal separator 20 for the fuel cell and a structure of the gasket assembly 70 .
  • the fuel cell stack 100 according to the exemplary embodiment of the present invention has a structure capable of improving productivity, and reducing failure of the metal separator 20 for the fuel cell.
  • the metal separator 20 for the fuel cell in the exemplary embodiment of the present invention may be formed of a set of first and second metal plates 21 and 31 by for example laser welding the metal plates 21 and 31 in a state where the separated cooling surfaces of the first and second metal plates 21 and 31 are in close contact with each other. That is, the cooling channel 41 may be formed, in such a way that when external regions of the cooling channels 25 and 35 of the cooling surfaces of the first and second metal plates 21 and 31 are in close contact with each other, close contact portions thereof are welded by laser, so that the cooling channels 25 and 35 between the cooling surfaces are unified together.
  • FIG. 2 is a cross-sectional configuration diagram illustrating the metal separator applied to the fuel cell stack according to the exemplary embodiment of the present invention.
  • one or more curved portions 61 which are symmetrical to each other, are included around the welded portion of the first and second metal plates 21 and 31 in the exemplary embodiment of the present invention. Additionally, a plurality of curved portions 61 are formed at edge portions of the reaction surfaces of the first and second metal plates 21 and 31 .
  • the curved portions 61 may be formed so as to be curved in a direction of the membrane-electrode assembly 10 at the edge portions of the reaction surfaces of the first and second metal plates 21 and 31 .
  • the curved portions 61 are formed so as to be spaced apart from each other at a predetermined interval, and may be formed as beads protruding from the cooling surfaces of the first and second metal plates 21 and 31 in a direction of recesses of the cooling channels 25 and 35 at the edge portions of the reaction surfaces of the first and second metal plates 21 and 31 .
  • the metal separator 20 for the fuel cell may be formed by welding the external regions of the cooling channels 25 and 35 when the cooling surfaces of the first and second metal plates 21 and 31 are in close contact with each other.
  • the metal separator 20 for the fuel cell may be formed by forming the curved portions 61 , which are symmetrical to each other, at the edge portions of the first and second metal plates 21 and 31 , and welding the regions between the curved portions 61 . Accordingly, in the exemplary embodiment of the present invention, the cooling surfaces of the first and second metal plates 21 and 31 are welded, and the curved portions 61 curved toward the membrane-electrode assembly 10 are formed at the edge portions of the reaction surfaces of the first and second metal plates 21 and 31 , so that it is possible to further improve air-tightness of the cooling surfaces and the reaction surfaces of the metal separator 20 for the fuel cell.
  • FIG. 3 is a partially cut perspective view illustrating the gasket assembly applied to the fuel cell stack according to the exemplary embodiment of the present invention.
  • the gasket assembly 70 according to the exemplary embodiment of the present invention has the purpose of maintaining air-tightness between the edge portions of the first and second metal plates 21 and 31 of the metal separator 20 for the fuel cell and the membrane-electrode assembly 10 as mentioned above.
  • the gasket assembly 70 may be installed between the metal plates 21 and 31 and the membrane-electrode assembly 10 with the curved portion 61 interposed between the first and second metal plates 21 and 31 .
  • the gasket assembly 70 may include a frame 71 formed of an insulation material, and gaskets 73 integrally injection molded with the frame 71 .
  • the frame 71 may include a first portion 72 a disposed in a stack direction of the fuel cells 50 , and a second portion 72 b connected to the first portion 72 a in a vertical direction.
  • the first portion 72 a is erected in the stack direction of the fuel cells 50
  • the second portion 72 b may be connected to a center of the first portion 72 a in a horizontal direction. That is, the frame 71 may have a cross-section shaped like a letter “T”.
  • the gaskets 73 may be injection molded in upper and lower surfaces of the second portion 72 b of the frame 71 , and may be disposed between the curved portions 61 of the metal plates 21 and 31 between the edge portions of the first and second metal plates 21 and 31 and the membrane-electrode assembly 10 .
  • at least one side surface of the gasket 73 may be in close contact with the curved portion 61 of the metal separator 20 , and be compressed by the metal separator 20 when the fuel cells are coupled, and have a shape corresponding to a shape of the curved portion 61 .
  • the fuel cell stack 100 having the aforementioned configuration, it is possible to maintain air-tightness of the fuel cells 50 by separately forming the gasket assembly 70 by a method of injection molding the gasket 73 to the frame 71 , and interposing the gasket assembly 70 between the edge portions of the first and second metal plates 21 and 31 of the metal separator 20 and the membrane-electrode assembly 10 .
  • the gasket assembly 70 is separately formed, so that it is possible to further improve rigidity and air-tightness of the fuel cells 50 , prevent deformation, surface contamination, and the like of the metal separator 20 present in the related art, while at the same time reducing failure of the metal separator 20 , and further improving productivity of the entire stack 100 .
  • the frame 71 of the gasket assembly 70 may serve as a stopper when the fuel cells 50 are stacked, so that it is possible to achieve external insulation of the metal separator 20 and uniformity of a length of the stack.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Fuel Cell (AREA)
US14/103,315 2012-12-12 2013-12-11 Metal separator for fuel cell, fuel cell stack having the same and gasket assembly with fuel cell stack Abandoned US20140162164A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020120144840A KR101416390B1 (ko) 2012-12-12 2012-12-12 연료 전지용 금속 분리판, 이를 포함하는 연료 전지 스택 및 이에 적용되는 가스켓 어셈블리
KR10-2012-0144840 2012-12-12

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KR (1) KR101416390B1 (zh)
CN (1) CN103872361A (zh)
DE (1) DE102013225733A1 (zh)

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DE102013225733A1 (de) 2014-06-12

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